JP2014237858A - タイヤ用ゴム組成物 - Google Patents
タイヤ用ゴム組成物 Download PDFInfo
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- JP2014237858A JP2014237858A JP2014195135A JP2014195135A JP2014237858A JP 2014237858 A JP2014237858 A JP 2014237858A JP 2014195135 A JP2014195135 A JP 2014195135A JP 2014195135 A JP2014195135 A JP 2014195135A JP 2014237858 A JP2014237858 A JP 2014237858A
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- rubber composition
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- rubber
- catechins
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- 239000000203 mixture Substances 0.000 title claims abstract description 75
- 229920001971 elastomer Polymers 0.000 title claims abstract description 69
- 239000005060 rubber Substances 0.000 title claims abstract description 69
- ADRVNXBAWSRFAJ-UHFFFAOYSA-N catechin Natural products OC1Cc2cc(O)cc(O)c2OC1c3ccc(O)c(O)c3 ADRVNXBAWSRFAJ-UHFFFAOYSA-N 0.000 claims abstract description 63
- 235000005487 catechin Nutrition 0.000 claims abstract description 63
- PFTAWBLQPZVEMU-DZGCQCFKSA-N (+)-catechin Chemical compound C1([C@H]2OC3=CC(O)=CC(O)=C3C[C@@H]2O)=CC=C(O)C(O)=C1 PFTAWBLQPZVEMU-DZGCQCFKSA-N 0.000 claims abstract description 30
- 229950001002 cianidanol Drugs 0.000 claims abstract description 29
- 238000002360 preparation method Methods 0.000 claims abstract description 29
- 239000011256 inorganic filler Substances 0.000 claims abstract description 15
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 15
- 229960003656 ricinoleic acid Drugs 0.000 claims abstract description 13
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- -1 ricinoleic acid ester Chemical class 0.000 claims abstract description 11
- 150000001765 catechin Chemical class 0.000 claims description 35
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 17
- 229920003244 diene elastomer Polymers 0.000 claims description 17
- GVJHHUAWPYXKBD-UHFFFAOYSA-N d-alpha-tocopherol Natural products OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-UHFFFAOYSA-N 0.000 claims description 9
- 229930003799 tocopherol Natural products 0.000 claims description 8
- 239000011732 tocopherol Substances 0.000 claims description 8
- 235000010384 tocopherol Nutrition 0.000 claims description 7
- 229960001295 tocopherol Drugs 0.000 claims description 7
- GVJHHUAWPYXKBD-IEOSBIPESA-N α-tocopherol Chemical compound OC1=C(C)C(C)=C2O[C@@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C GVJHHUAWPYXKBD-IEOSBIPESA-N 0.000 claims description 7
- 239000006229 carbon black Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 58
- 239000000377 silicon dioxide Substances 0.000 abstract description 29
- 238000002156 mixing Methods 0.000 abstract description 18
- 230000032683 aging Effects 0.000 abstract description 9
- 229920000223 polyglycerol Polymers 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 3
- 239000003112 inhibitor Substances 0.000 abstract 3
- 230000003647 oxidation Effects 0.000 abstract 3
- 238000007254 oxidation reaction Methods 0.000 abstract 3
- 239000011846 petroleum-based material Substances 0.000 abstract 3
- 150000001993 dienes Chemical class 0.000 abstract 1
- 230000003712 anti-aging effect Effects 0.000 description 21
- 239000002994 raw material Substances 0.000 description 19
- 239000003208 petroleum Substances 0.000 description 18
- 239000003963 antioxidant agent Substances 0.000 description 17
- 235000006708 antioxidants Nutrition 0.000 description 17
- 230000003078 antioxidant effect Effects 0.000 description 13
- XMOCLSLCDHWDHP-IUODEOHRSA-N epi-Gallocatechin Chemical compound C1([C@H]2OC3=CC(O)=CC(O)=C3C[C@H]2O)=CC(O)=C(O)C(O)=C1 XMOCLSLCDHWDHP-IUODEOHRSA-N 0.000 description 12
- 239000006087 Silane Coupling Agent Substances 0.000 description 11
- WMBWREPUVVBILR-UHFFFAOYSA-N GCG Natural products C=1C(O)=C(O)C(O)=CC=1C1OC2=CC(O)=CC(O)=C2CC1OC(=O)C1=CC(O)=C(O)C(O)=C1 WMBWREPUVVBILR-UHFFFAOYSA-N 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 9
- 238000013329 compounding Methods 0.000 description 9
- XMOCLSLCDHWDHP-UHFFFAOYSA-N L-Epigallocatechin Natural products OC1CC2=C(O)C=C(O)C=C2OC1C1=CC(O)=C(O)C(O)=C1 XMOCLSLCDHWDHP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- DZYNKLUGCOSVKS-UHFFFAOYSA-N epigallocatechin Natural products OC1Cc2cc(O)cc(O)c2OC1c3cc(O)c(O)c(O)c3 DZYNKLUGCOSVKS-UHFFFAOYSA-N 0.000 description 8
- WMBWREPUVVBILR-WIYYLYMNSA-N (-)-Epigallocatechin-3-o-gallate Chemical compound O([C@@H]1CC2=C(O)C=C(C=C2O[C@@H]1C=1C=C(O)C(O)=C(O)C=1)O)C(=O)C1=CC(O)=C(O)C(O)=C1 WMBWREPUVVBILR-WIYYLYMNSA-N 0.000 description 6
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 235000019198 oils Nutrition 0.000 description 6
- 229940066675 ricinoleate Drugs 0.000 description 6
- WBHHMMIMDMUBKC-QJWNTBNXSA-M ricinoleate Chemical compound CCCCCC[C@@H](O)C\C=C/CCCCCCCC([O-])=O WBHHMMIMDMUBKC-QJWNTBNXSA-M 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 6
- 239000011593 sulfur Substances 0.000 description 6
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- XMOCLSLCDHWDHP-SWLSCSKDSA-N (+)-Epigallocatechin Natural products C1([C@H]2OC3=CC(O)=CC(O)=C3C[C@@H]2O)=CC(O)=C(O)C(O)=C1 XMOCLSLCDHWDHP-SWLSCSKDSA-N 0.000 description 4
- WMBWREPUVVBILR-GHTZIAJQSA-N (+)-gallocatechin gallate Chemical compound O([C@H]1CC2=C(O)C=C(C=C2O[C@@H]1C=1C=C(O)C(O)=C(O)C=1)O)C(=O)C1=CC(O)=C(O)C(O)=C1 WMBWREPUVVBILR-GHTZIAJQSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 244000043261 Hevea brasiliensis Species 0.000 description 4
- 229940030275 epigallocatechin gallate Drugs 0.000 description 4
- LVJJFMLUMNSUFN-UHFFFAOYSA-N gallocatechin gallate Natural products C1=C(O)C=C2OC(C=3C=C(O)C(O)=CC=3)C(O)CC2=C1OC(=O)C1=CC(O)=C(O)C(O)=C1 LVJJFMLUMNSUFN-UHFFFAOYSA-N 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 4
- 229920003052 natural elastomer Polymers 0.000 description 4
- 229930014626 natural product Natural products 0.000 description 4
- 229920001194 natural rubber Polymers 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 238000009864 tensile test Methods 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- PFTAWBLQPZVEMU-UKRRQHHQSA-N (-)-epicatechin Chemical compound C1([C@H]2OC3=CC(O)=CC(O)=C3C[C@H]2O)=CC=C(O)C(O)=C1 PFTAWBLQPZVEMU-UKRRQHHQSA-N 0.000 description 3
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 description 3
- 239000008158 vegetable oil Substances 0.000 description 3
- PFTAWBLQPZVEMU-ZFWWWQNUSA-N (+)-epicatechin Natural products C1([C@@H]2OC3=CC(O)=CC(O)=C3C[C@@H]2O)=CC=C(O)C(O)=C1 PFTAWBLQPZVEMU-ZFWWWQNUSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 235000010323 ascorbic acid Nutrition 0.000 description 2
- 239000011668 ascorbic acid Substances 0.000 description 2
- 229960005070 ascorbic acid Drugs 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- LPTRNLNOHUVQMS-UHFFFAOYSA-N epicatechin Natural products Cc1cc(O)cc2OC(C(O)Cc12)c1ccc(O)c(O)c1 LPTRNLNOHUVQMS-UHFFFAOYSA-N 0.000 description 2
- 235000012734 epicatechin Nutrition 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical compound CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 229930013783 (-)-epicatechin Natural products 0.000 description 1
- 235000007355 (-)-epicatechin Nutrition 0.000 description 1
- LSHVYAFMTMFKBA-TZIWHRDSSA-N (-)-epicatechin-3-O-gallate Chemical compound O([C@@H]1CC2=C(O)C=C(C=C2O[C@@H]1C=1C=C(O)C(O)=CC=1)O)C(=O)C1=CC(O)=C(O)C(O)=C1 LSHVYAFMTMFKBA-TZIWHRDSSA-N 0.000 description 1
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- IABJHLPWGMWHLX-UHFFFAOYSA-N 3-(1,3-benzothiazol-2-yl)propyl-trimethoxysilane Chemical compound C1=CC=C2SC(CCC[Si](OC)(OC)OC)=NC2=C1 IABJHLPWGMWHLX-UHFFFAOYSA-N 0.000 description 1
- ZZMVLMVFYMGSMY-UHFFFAOYSA-N 4-n-(4-methylpentan-2-yl)-1-n-phenylbenzene-1,4-diamine Chemical compound C1=CC(NC(C)CC(C)C)=CC=C1NC1=CC=CC=C1 ZZMVLMVFYMGSMY-UHFFFAOYSA-N 0.000 description 1
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 description 1
- LSHVYAFMTMFKBA-UHFFFAOYSA-N ECG Natural products C=1C=C(O)C(O)=CC=1C1OC2=CC(O)=CC(O)=C2CC1OC(=O)C1=CC(O)=C(O)C(O)=C1 LSHVYAFMTMFKBA-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- IPMYMEWFZKHGAX-UHFFFAOYSA-N Isotheaflavin Natural products OC1CC2=C(O)C=C(O)C=C2OC1C(C1=C2)=CC(O)=C(O)C1=C(O)C(=O)C=C2C1C(O)CC2=C(O)C=C(O)C=C2O1 IPMYMEWFZKHGAX-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000002292 Radical scavenging effect Effects 0.000 description 1
- 229910020175 SiOH Inorganic materials 0.000 description 1
- UXRMWRBWCAGDQB-UHFFFAOYSA-N Theaflavin Natural products C1=CC(C2C(CC3=C(O)C=C(O)C=C3O2)O)=C(O)C(=O)C2=C1C(C1OC3=CC(O)=CC(O)=C3CC1O)=CC(O)=C2O UXRMWRBWCAGDQB-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229930003268 Vitamin C Natural products 0.000 description 1
- 229930003427 Vitamin E Natural products 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- KMJPKUVSXFVQGZ-WQLSNUALSA-N [(2r,3r)-5,7-dihydroxy-2-[3,4,5-trihydroxy-6-oxo-1-[(2r,3r)-3,5,7-trihydroxy-3,4-dihydro-2h-chromen-2-yl]benzo[7]annulen-8-yl]-3,4-dihydro-2h-chromen-3-yl] 3,4,5-trihydroxybenzoate Chemical compound O([C@@H]1CC2=C(O)C=C(O)C=C2O[C@@H]1C1=CC(=O)C(O)=C2C(O)=C(O)C=C(C2=C1)[C@H]1OC2=CC(O)=CC(O)=C2C[C@H]1O)C(=O)C1=CC(O)=C(O)C(O)=C1 KMJPKUVSXFVQGZ-WQLSNUALSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- JPPLPDOXWBVPCW-UHFFFAOYSA-N s-(3-triethoxysilylpropyl) octanethioate Chemical compound CCCCCCCC(=O)SCCC[Si](OCC)(OCC)OCC JPPLPDOXWBVPCW-UHFFFAOYSA-N 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- IPMYMEWFZKHGAX-ZKSIBHASSA-N theaflavin Chemical compound C1=C2C([C@H]3OC4=CC(O)=CC(O)=C4C[C@H]3O)=CC(O)=C(O)C2=C(O)C(=O)C=C1[C@@H]1[C@H](O)CC2=C(O)C=C(O)C=C2O1 IPMYMEWFZKHGAX-ZKSIBHASSA-N 0.000 description 1
- 235000014620 theaflavin Nutrition 0.000 description 1
- 229940026509 theaflavin Drugs 0.000 description 1
- FJYGFTHLNNSVPY-BBXLVSEPSA-N theaflavin digallate Chemical compound C1=C([C@@H]2[C@@H](CC3=C(O)C=C(O)C=C3O2)O)C=C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(=O)C2=C1C([C@H]1OC3=CC(O)=CC(O)=C3C[C@H]1O)=CC(O)=C2OC(=O)C1=CC(O)=C(O)C(O)=C1 FJYGFTHLNNSVPY-BBXLVSEPSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 235000019149 tocopherols Nutrition 0.000 description 1
- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 description 1
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
- 235000019154 vitamin C Nutrition 0.000 description 1
- 239000011718 vitamin C Substances 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- QUEDXNHFTDJVIY-UHFFFAOYSA-N γ-tocopherol Chemical class OC1=C(C)C(C)=C2OC(CCCC(C)CCCC(C)CCCC(C)C)(C)CCC2=C1 QUEDXNHFTDJVIY-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
Description
表1に示す配合からなるタイヤ用品質改良剤1〜3及び比較調整物を以下の方法で調製した。表1に記載の配合割合で、カテキン類a,bをエタノールに分散させた後、ポリグリセリン縮合リシノレイン酸エステルで処理することにより、油溶性カテキン製剤をそれぞれ調製した。得られた油溶性カテキン製剤に米白絞油及び/又はトコフェノールを配合し混合することにより、タイヤ用品質改良剤1〜3を調製した。また、比較調整物として、表1に記載の配合物を秤量・混合して調製した。
・カテキン類a:太陽化学社製試作品、EGCG等の含有量が70重量%のもの
・カテキン類b:太陽化学社製試作品、EGCG等の含有量が20重量%のもの
・ポリグリセリン縮合リシノレイン酸エステル:太陽化学社製、グリセリン重合度が2〜10、縮合リシノレイン酸の重合度が2〜6のもの
・エタノール:和光純薬社製1級
表2に示す配合からなる8種類のタイヤ用ゴム組成物(実施例1〜5、比較例1〜3)を、それぞれ硫黄及び加硫促進剤を除く配合成分を秤量し、1.8Lのバンバリーミキサーで5分間混練し、温度160℃でマスターバッチを放出し室温冷却した。このマスターバッチを1.8Lのバンバリーミキサーに供し、硫黄及び加硫促進剤を加え混合し、タイヤ用ゴム組成物を調製した。
東洋精機製作所社製粘弾性スペクトロメーターを用いて、温度60℃におけるtanδを、静的歪み10%、動的歪み±2%、周波数20Hzの条件で測定した。得られた結果は、比較例1の値の逆数を100とする指数として表2の「発熱性」の欄に示した。この発熱性の指数が大きいほどtanδが小さく、タイヤにしたときの燃費性能が優れることを意味する。
得られた試験片からJIS K6251に準拠した3号ダンベル型試験片を成形した。各ダンベル型試験片を2群に分けその一方を70℃で96時間加熱(老化処理)を行なった。老化処理前後のダンベル型試験片を用いて、温度20℃、引張り速度500mm/分の条件で引張試験を行ない応力−歪み曲線(S−Sカーブ)を測定した。それぞれについて歪み10%毎の応力を記録し、S−Sカーブの面積を求めた。次に(老化処理後の面積/老化処理前の面積×100)により面積の変化率(%)を計算し、引張試験の老化防止性能とした。得られた結果は、比較例1を100とする指数として表2の「老化防止性能」の欄に示した。この耐老化性能の指数が大きいほど引張試験における老化防止性能が高いことを意味する。
・NR:天然ゴム、RSS#1
・カーボンブラック:新日化カーボン社製ニテロン#200IN
・シリカ:東ソーシリカ社製Nipsil AQ−N(CTAB吸着比表面積157m2/g)
・シランカップリング剤:信越化学社製KBE845
・エピカテキン:ナカライデスク 社製(−)-エピカテキン、カテキン99重量%
・タイヤ用品質改良剤1〜3及び比較調整物:上述した通り調製したもの
・酸化防止剤1:フレキシス社製SANTOFLEX 6PPD
・酸化防止剤2:フレキシス社製FLECTOL TMQ
・亜鉛華:正同化学工業社製酸化亜鉛3種
・ステアリン酸:日油社製ビーズステアリン酸
・ワックス:大内新興化学工業社製サンノック
・アロマオイル:昭和シェル石油アロマ4号
・加硫促進剤:大内新興化学工業社製ノクセラーNS−P
・硫黄:細井化学社製油処理硫黄
Claims (7)
- ジエン系ゴム100重量部に対し、カテキン類及びポリグリセリン縮合リシノレイン酸エステルを含有する油溶性カテキン製剤を含むタイヤ用品質改良剤を0.5〜6重量部を配合したタイヤ用ゴム組成物。
- さらに無機充填剤を配合した請求項1に記載のタイヤ用ゴム組成物。
- 前記無機充填剤がカーボンブラックを含む請求項2に記載のタイヤ用ゴム組成物。
- 前記ジエン系ゴム100重量部に対し、前記無機充填剤を20〜130重量部配合した請求項2または3に記載のタイヤ用ゴム組成物。
- 前記油溶性カテキン製剤が、前記カテキン類100重量部に対して、前記ポリグリセリン縮合リシノレイン酸エステルを150〜1200重量部、アルコールを25〜300重量部配合する請求項1〜4のいずれかに記載のタイヤ用ゴム組成物。
- さらにトコフェロールを含有する請求項1〜5のいずれかに記載のタイヤ用ゴム組成物。
- 請求項1〜6のいずれかに記載のタイヤ用ゴム組成物を使用した空気入りタイヤ。
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